execute_callstack_for_multiparameter_attributes

# File activerecord/lib/active_record/attribute_assignment.rb, line 71
    def execute_callstack_for_multiparameter_attributes(callstack)
      errors = []
      callstack.each do |name, values_with_empty_parameters|
        begin
          send("#{name}=", MultiparameterAttribute.new(self, name, values_with_empty_parameters).read_value)
        rescue => ex
          errors << AttributeAssignmentError.new("error on assignment #{values_with_empty_parameters.values.inspect} to #{name} (#{ex.message})", ex, name)
        end
      end
      unless errors.empty?
        error_descriptions = errors.map { |ex| ex.message }.join(",")
        raise MultiparameterAssignmentErrors.new(errors), "#{errors.size} error(s) on assignment of multiparameter attributes [#{error_descriptions}]"
      end
    end